Mooring — Git & GitHub MCP Server

Mooring lines for your code — Git and GitHub operations for AI tools.

Mooring is an MCP server that gives AI assistants structured access to local Git repositories and the GitHub API. Local operations use GitPython (no subprocess calls). GitHub operations use the PyGithub library with token masking and rate limit handling built in.

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Tools

Local Git

Tool	Description	Key Parameters
repo_status	Branch, ahead/behind, stash count, staged/unstaged/untracked files	repo_path
repo_log	Commit log with optional filters	repo_path, max_count, author, since, path, search
repo_diff	Unified diff — working tree, staged, or between refs	repo_path, staged, from_ref, to_ref
repo_blame	Git blame with optional line range	repo_path, file_path, start_line, end_line
repo_branches	All branches with tracking info, last commit, ahead/behind	repo_path
repo_stash	Stash operations: list, push, pop, apply	repo_path, action, message

GitHub

Tool	Description	Key Parameters
gh_pr_list	List pull requests	repo, state, author, label
gh_pr_detail	PR detail with reviews, comments, and check runs	repo, number
gh_pr_create	Create a pull request	repo, title, body, head, base, labels, reviewers
gh_issues	List, create, or update issues	repo, state, action, title, body, number
gh_actions	List recent GitHub Actions workflow runs	repo, workflow, status

Utility

Tool	Description	Key Parameters
health	Server version and status check	(none)

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Installation

# PyPI
pip install mooring-mcp

# Isolated install
pipx install mooring-mcp

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Usage

Run the server directly:

mooring

Claude Code

claude mcp add mooring -- mooring

Claude Desktop

Add to your Claude Desktop configuration (claude_desktop_config.json):

{
  "mcpServers": {
    "mooring": {
      "command": "mooring",
      "env": {
        "GITHUB_TOKEN": "your-github-personal-access-token"
      }
    }
  }
}

The GITHUB_TOKEN environment variable is required for all GitHub tools (gh_*). Local Git tools work without it.

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Security

• Path traversal protection — file paths are resolved and validated against the repository root before any operation
• Symlink escape detection — symlinks that resolve outside the repository are rejected
• Ref validation — Git refs are checked against a safe character pattern and verified to exist before use
• Token masking — error messages are scrubbed for GitHub token patterns (ghp_*, gho_*, github_pat_*) before being returned
• Rate limit handling — GitHub 403 responses are caught and surfaced as clear messages instead of raw exceptions

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Development

git clone https://github.com/seayniclabs/mooring.git
cd mooring
python -m venv .venv && source .venv/bin/activate
pip install -e ".[test]"
python -m pytest tests/ -q

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Using with a Gateway

If you're running multiple MCP servers, route them through a gateway like tbxark/mcp-proxy to manage all child processes from a single persistent service. The proxy handles process lifecycle, centralized config, and crash recovery — each server still gets its own SSE endpoint but you manage everything from one config file instead of scattered Claude Code entries.

For a full walkthrough of how this works in practice, see The Hidden Cost of a Loaded MCP Stack on charlieseay.com.

License

MIT